IN SITU CHARACTERIZATION AND DIFFERENTIATION OF KAOLINITES IN LATERITIC WEATHERING PROFILES USING INFRARED MICROSPECTROSCOPY

IRD, UR-055, Centre d’Ile de France, LFS, 32 avenue Henri Varagnat, 93143 Bondy Cedex, FranceAbstract—Lateritic weathering kaolinites have been characterizedin situ and differentiated for the firsttime by means of infrared microspectroscopy (IRMS). Four classical OH-stretching bands have beenobservedintheFouriertransforminfrared(FTIR)spectra,at3695,3668,3650and3620 cm